Dental tool.



Patented Mar. 18,1919.

Swann,

C. B. HOSTETLER.

DENTAL T1091.

APPLICATION FILED JAN.25. 1919.

*entrain srarns rarnnr ersten.

CLAUDE B. HOSTETLER, OF OSTRANDER, OHIO.

"u vDrawer, Toor.. f.

Application filed January 25, 1919.

To all whom t may concern.'

Be it known that I, CLAUDE B. Hos'rEtmnR, a citizen lof the UnitedStates, residing at Ost-rander, in the county of Delaware and State ofOhio, have invented certain new and useful Improvements in Dental Tools,of which the following is a specification.

My invention relates to dental tools; and more particularly to a devicefor holding tooth crowns, caps, and the like, when the same are beingoperated upon.

The object of the invention is to so construct the same that it will bedurable, efficient, can be easily and cheaply manufactured, the partscomposing the same can be easily assembled and disassembled, and as saidparts will be constructed of standard sizes they can be easily restoredshould a part become worn or useless.

In the drawings forming a part of the invention, and in which likesymbols of reference represen-t corresponding parts in the several viewsFigure 1 is an elevation of the device showing the same in its operativeposition;

Fig. 2 a sectional view of the same, with the parts there separated;

Fig. 8 a view of the perforated elastic tip, composed, preferably ofcork, rubber, or the like; and,

Fig. '4 is a view of a modified form of the l tip.

In the drawings, 1 represents the handle of the device, having aninternally threaded sleeve 2 secured in its upper portion; 3 a portionof the sleeve extending beyond the upper surface of the handle; and 4the .screw-threads in the sleeve. 5 is a perforated collar, Ihaving ribs6 formed in the same; and 7 a counterbore in its lower portion toreceive the extension 3 -of the handle and thus hold the parts of thedevice in operative relation. l

8 is a wire or rod, preferably angular, as shown to prevent it rotatingin the collar 5, said collar having an angular portion 9 to receive thesame; and 10 are screw-threads on the rod to engage screw-threads 4 onthe collar.

l2 is a cylinder or tip, of cork, or the like,

Specification of Letters Patent.

Patented Mar. 18, 1919.

seriai No. 273,038.

formed, preferably, with a flared opening 13, and a perforation 14,adapted to receive rod 8. The flared opening 13 receives head 15 of rod8, said head, may if desired, be angular, though said construction isnot absolutely necessary. 12a is modification of tip.

16 indicates the crown in its position ready for the hand of theoperator.

17 is a. milled enlargement on collar 5 for the purpose of holding thesame and operating the tool.

The operation of the device will be clear from the foregoingdescription. The operator grasps the handle 1 and revolves the sameholding the milled portion with the other hand, the rod feeding in themeantime into the Ahandle and thus compresses the inner portion of thetip, expanding the same. laterally in a uniform manner, producing a:perfect working holder for the crown or other element operated upon.

Having now fully described my invention, what I claim as new, and desireto secure by Letters-Patent, is

1. A dental instrument, consisting of a handle, a collar having anangular interior adapted to be received upon said handle, a rod havingan angular po-rtion to operate in the collar, and a tip for the rod,said tip adapted to be expanded when the handle of the device isrota-ted.

2. A dental instrument, provided with a handle, a collar w-orkinginconjun-ction with the handle, a rod adapted to operate in the collar,said rod formed with a hea-d, and a perforated resilient tip adapted tobe received on the rod and expanded by the same .when the device isoperated.

3. A dental instrument, having a handle provided with a threaded-sleeve,said sleeve extending beyond the top of the handle, a collar formed witha counterbore adapted to receive the extended portion of the sleeve,rib-s in the collar, and a rod having threads formed on the same toengage with threads of the collar, and a head on the rod to engage theholding means.

4. In a device of the character described, a handle having a threadedsleeve, a collar adapted to Work in conjunction With the In testimonywhereof I aix my Signature bangle, means for connecting the eoila ang inpresence of two Witnesses.

han 1e a rod Within the eo lar sai ro formed with a top, a, perforatedexpansible CLAUDE BY HOSTETLER' 5 tip on the rod, and means for feedingsaid Witnesses: n

rod in the handle with which the same is A. M. JAoos,

operated. S.VE. JACOBS'.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of latents.

Washington, D. U.

